refactor: modular route organization (Phase 1-2 complete)

- Split monolithic build route handler into focused modules
- Extract validation, multi-copy, include/exclude, themes, and partner routes
- Add response utilities and telemetry decorators
- Create route pattern documentation
- Fix multi-copy detection bug (tag key mismatch)
- Improve code maintainability and testability

Roadmap 9 M1 Phase 1-2
This commit is contained in:
matt 2026-03-03 21:49:08 -08:00
parent 97da117ccb
commit e81b47bccf
20 changed files with 2852 additions and 1552 deletions

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